'''Harry Victor Jaffa''' (October 7, 1918 – January 10, 2015) was an American historian and collegiate professor. He was the Professor Emeritus at Claremont McKenna College
and Claremont Graduate University
and a distinguished fellow of the Claremont Institute
. He wrote on Aristotle
, Thomas Aquinas
, Abraham Lincoln
, Thomas Jefferson
, Winston Churchill
, Leo Strauss
, United States Constitution|American constitutionalism
, and natural law
. He has been published in the ''Claremont Review of Books
'', the ''Review of Politics'', ''National Review
'', and the ''New York Times
''. His most famous work, ''Crisis of the House Divided: An Interpretation of the Issues in the Lincoln-Douglas Debates'', written in 1959, has been described as "the greatest Lincoln book ever."
Jaffa was a formative influence on the American Conservatism in the United...